I think it would be cool if there was a prologue to the Jak series starring his father Damos.
Damos and Sig are the only secondary characters in the games that would be worthy of having their own spin-offs IMO.

Daxter 2: rise of the ottsels!
I always thought there should of been ottsels running around in the forest and stuff.
Maybe Ottsel Veger wants to kill Daxter and all the ottsels, and some new ones, and Jak should be ottselised for a small portion of the game.
I am so cool!